I believe that if the Axis powers had not made many blunders and miscalculations they would have definitely not been defeated, and perhaps could have conquered the world.
I will allow my opponent to go first.
(disclaimer- I am not a Nazi and am in no way suggesting that they SHOULD have won, only that they could have.)

I would have to disagree with your statement. They fought armies stronger than theirs on all fronts. On the west, they were fighting most of Europe and America. The European armies may have been weaker, but the Americans were capable of creating vast amounts of ships and equipment in minimal time seeing as how they didn't have the bombing runs and open war in their country. In the east, they were fighting the Soviets. While it is true that the Soviets weren't technologically superior, and their military training was inferior, they had vast numbers of soldiers. The Germans needed every soldier they had, but the Soviets could have 100,000 troops die, and replace them with double that. Finally, Japan was just fanatical. They weren't superior.

This is just an opening, I will add more as we go on. Thank you for offering this debate, and good luck.